diff --git a/package-lock.json b/package-lock.json
index 754e498..ff86223 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -25,7 +25,7 @@
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@@ -4518,12 +4518,12 @@
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@@ -4539,9 +4539,9 @@
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-            "resolved": "https://registry.npmjs.org/cssnano-preset-default/-/cssnano-preset-default-5.2.8.tgz",
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+            "resolved": "https://registry.npmjs.org/cssnano-preset-default/-/cssnano-preset-default-5.2.9.tgz",
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@@ -4553,7 +4553,7 @@
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-                "postcss-merge-longhand": "^5.1.4",
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@@ -11348,9 +11348,9 @@
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-            "integrity": "sha512-hbqRRqYfmXoGpzYKeW0/NCZhvNyQIlQeWVSao5iKWdyx7skLvCfQFGIUsP9NUs3dSbPac2IC4Go85/zG+7MlmA==",
+            "version": "5.1.5",
+            "resolved": "https://registry.npmjs.org/postcss-merge-longhand/-/postcss-merge-longhand-5.1.5.tgz",
+            "integrity": "sha512-NOG1grw9wIO+60arKa2YYsrbgvP6tp+jqc7+ZD5/MalIw234ooH2C6KlR6FEn4yle7GqZoBxSK1mLBE9KPur6w==",
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@@ -11752,9 +11752,9 @@
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-            "integrity": "sha512-it1vE95zF6dTT9lBsYbxvqh0Soy4SPowchj0UBGj/V6cTPnXXtQOPUbhZ6CmGzAD/rW22LQK6E96pcdJXk4A4w==",
+            "version": "2.1.0",
+            "resolved": "https://registry.npmjs.org/nth-check/-/nth-check-2.1.0.tgz",
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@@ -18320,20 +18320,20 @@
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-            "resolved": "https://registry.npmjs.org/cssnano/-/cssnano-5.1.8.tgz",
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+            "resolved": "https://registry.npmjs.org/cssnano/-/cssnano-5.1.9.tgz",
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+                "cssnano-preset-default": "^5.2.9",
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                 "yaml": "^1.10.2"
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-            "resolved": "https://registry.npmjs.org/cssnano-preset-default/-/cssnano-preset-default-5.2.8.tgz",
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+            "version": "5.2.9",
+            "resolved": "https://registry.npmjs.org/cssnano-preset-default/-/cssnano-preset-default-5.2.9.tgz",
+            "integrity": "sha512-/4qcQcAfFEg+gnXE5NxKmYJ9JcT+8S5SDuJCLYMDN8sM/ymZ+lgLXq5+ohx/7V2brUCkgW2OaoCzOdAN0zvhGw==",
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@@ -18345,7 +18345,7 @@
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                 "postcss-discard-empty": "^5.1.1",
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-                "postcss-merge-longhand": "^5.1.4",
+                "postcss-merge-longhand": "^5.1.5",
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@@ -23695,9 +23695,9 @@
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-            "resolved": "https://registry.npmjs.org/postcss-merge-longhand/-/postcss-merge-longhand-5.1.4.tgz",
-            "integrity": "sha512-hbqRRqYfmXoGpzYKeW0/NCZhvNyQIlQeWVSao5iKWdyx7skLvCfQFGIUsP9NUs3dSbPac2IC4Go85/zG+7MlmA==",
+            "version": "5.1.5",
+            "resolved": "https://registry.npmjs.org/postcss-merge-longhand/-/postcss-merge-longhand-5.1.5.tgz",
+            "integrity": "sha512-NOG1grw9wIO+60arKa2YYsrbgvP6tp+jqc7+ZD5/MalIw234ooH2C6KlR6FEn4yle7GqZoBxSK1mLBE9KPur6w==",
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@@ -23956,9 +23956,9 @@
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-                    "resolved": "https://registry.npmjs.org/nth-check/-/nth-check-2.0.1.tgz",
-                    "integrity": "sha512-it1vE95zF6dTT9lBsYbxvqh0Soy4SPowchj0UBGj/V6cTPnXXtQOPUbhZ6CmGzAD/rW22LQK6E96pcdJXk4A4w==",
+                    "version": "2.1.0",
+                    "resolved": "https://registry.npmjs.org/nth-check/-/nth-check-2.1.0.tgz",
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                     "dev": true,
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diff --git a/package.json b/package.json
index 9c64728..04275cf 100644
--- a/package.json
+++ b/package.json
@@ -49,7 +49,7 @@
         "babelify": "^10.0.0",
         "browserify": "^17.0.0",
         "cross-env": "^7.0.3",
-        "cssnano": "^5.1.8",
+        "cssnano": "^5.1.9",
         "del": "^6.1.0",
         "factor-bundle": "^2.5.0",
         "gulp": "^4.0.2",